Combined insulator and transformer



Aug. 19 1924. 1,505,252

R. E. FRICKEY COMBINED INSULATOR AND TRANSFORMER Filed March 21 1918 3 Sheets-Sheet 1 jumi? @Wlu R. E. FRICKEY COMBINED INSULATOR AND TRANSFORMER Aug. 19 1924.

Filed March 21. 1918 3 Sheets-Sheet 2 Aug. 19, 1924. 1,505,252

R. E. FRICKEY COMBINED INSULATOR AND TRANSFORMER Filed March 21. 1918 3 Sheets-Sheet 5 Patented Aug. 19, 1924.

PATENT OFFICE.

ROYAL E. FRICKEY, OLE CHICAGO, ILLINOIS.

COBIBEIIEL 'D INSULATOR AND TRANSFORMER.

Application filed March 21, 1918. Serial 130. 223,705.

To all whom it may concern:

Be it known that I, ROYAL E. FRIGKEY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Combination lnsulators and Transformers, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to insulators for electrical wires or conductors, and also to elec trical transformers.

One of the objects of the invention is to provide an arrangement or structure which will serve both as a terminal and insulator for electrical conductors and also as an electrical transformer for transforming electrical energy.

Another object of the invention is to pro duce a very simple, compact and thoroughly practicable construction.

Another object of the invention is to insulate the primary and secondary conductors eflectively from each other.

Another object of the invention is to secure a high degree of efliciency and a low cost of construction and maintenance.

In the accompanying drawings Fig. 1 is a side elevation of a combined conductor terminal or insulator and electrical transformer;

Fig. 2 is a vertical section of a portion of the same on an enlarged scale;

Figs. 3, 4 and 5 are horizontal sections taken on lines 3 3, 4-4, and 5-5, respectively in Fig. 2;

Fig. 6 is a vertical section of a portion of a modified form of device; and

Fig. 7 is a cross section taken on line 7-7 inFig. 6.

Referring to the drawings I show in Fig. 1 an arrangement in which my invention is utilized upon the top of a pole 1, although it will be understood, of course, that the invention may be used in other ways.

On the pole 1 is a cross arm 2 on which are mounted two upright members 3 and 4: which in turn support petticoat insulators 5 and 6, respectively. The members 3 and 4 are iron or steel,.or some other magnetic material. Between them is extended a cross piece 7 which is secured by bolts or rivets 8. The cross piece 7 serves as the core of one winding 9 of a transformer, the winding 9 being preferably the secondary winding. Another cross piece 10 is mounted so as to extend between the members 3 and 4, bein for example, mounted upon the tops of the insulators 5 and 6. As shown more in detail in Fig. 2, the member 10 is bolted to a cap 11 which encloses the upper part'of the insulator 6. A strap or band 12 extends around the cap 11 and serves as a dead-end for conductors 18 and 19. Cement 14: is preferably interposed between the cap 11 and the top of the insulator 6. The latter is shown consisting of a well known type of insulator having four different sections 6, 6*, 6, and 6, superposed upon one another and cemented together. As a convenient arrangement for mounting the insulator 6 upon the top of the member 5, I show the latter provided w1th a projection 16 which fits into a suitable socket in the insulator. It will be understood that the construction shown in Fig. 2 and just described is employed in connec= tion with the insulator 5, as well as in connection with the insulator 6 illustrated. Upon the cross piece 10 which is made of iron or steel or other suitable magnetic material, there is mounted a coil 17 of wire which is adapted to cooperate with the coil 9.to form the transformer. Thus it the coil 9 is the secondary, as previously stated, the coil 17 would be, the primary. The cross piece 10 is preferably made of laminated iron, as shown in Fig. 3; The cross piece 2 and upright members 3 and 4 are also preferably of laminated iron, as shown in Fig. 5, in order to secure the advantages of a laminated core as well known in transformer construction.

The primary coil 17 may be included in the line circuit as a partof the same, such line wires being shown at 18 and 19, and the connections between the same and the coil 17 being shown at 20 and 21, respectively. Holding wires 22 and 23 may be used to take the strain off the wires 18 and 19 by connecting the same with the straps 12 on the insulators 5 and 6. When the coil 17 is in a line circuit of comparatively high potential it is desirable that the associated metal parts be kept at the same potential as the coil. To accomplish this I prefer to deadend conductor 23 to the band 12'over a metallic cable eve. Suitable insulators are used between conductor 22 and the band 12, and

also between conductor 20 and other metal parts so that the coil 17 is connected to the metal part at only the one place referred to. For a similar reason the coil 9 is connected to the associated metal parts at one point, preferably on the upright 3. The turns of wire in the coils 9 and 17 are preferably insulated from each other and from the metal cores by suitable layers of insulating material 9 and 17, respectively.

Thus it will be seen that the upright members 3 and 4 with the cross pieces and 10 form a magnetic circuit which has two gaps in it formed by the top portlons of the 1nsulators 5 and 6; the caps 11 being connected and in contact with the insulating material of the insulators, and such material extending to the top of the member 16. These caps do not prevent the flow of magnetic flux, however, and a substantially closed magnetic circuit is formed. The coil 17 therefore, when energized by a current will cause-the structure to serve as a transformer, inducing a current in the secondary coil 9. Thus the device may serve as a transformer for transforming and utilizing the current of the line circuit and at the same time as a terminal or support and insulator for such line circuit.

The secondary coil 9 may be connected in any suitable way for any desired service, as for example, the ends 25 and 26 thereof may be led into a ipe 27 mounted on the ole 1 and thence l downwardly to the budding on which the pole may be mounted or to the ground to suitable cables, or otherwise.

In Figs. 6 and 7 I show a modified form in which there is a special insulator 28 of very thin material having a comparatively high crown or top mounted upon the top of the upri ht member 4". This insulator 28 is of suc comparatively thin material and high top that the effective gap in the magnetic circuit which "it" forms will be very small and therefore the characteristics of the device affected by the air gap will have an extreme value.

It will be understood that other changes and modifications may be made without departing from the invention.

' What I claim is:

1. A device of the class specified comprising an insulator for mounting electrical conductors thereon and a transformer combined with said insulator the insulator forming part of the magnetic circuit of the transformer.

2. A device of the class specified comprising an insulator adapted for mounting electrical conductors thereon and a transformer combined with the insulator to form a single unitary structure, the insulator forming a art of the magnetic circuit of the transormer. 3. A device of the class specified comprisin an insulator adapted for mounting electrical conductors thereon and a transformer combined with said insulator to form a unitary structure, the insulator and its support forming part of the-magnetic circuit of the transformer.

4. A device of the class specified comprising an insulator adapted for mountin electrical conductors thereon and a trans ormer combined with said insulator to form a unitary structure, the insulator having a sup- .port made of magnetic material and arranged to form a part of the magnetic circuit of the transformer.

5. A device of the class specified comprising an insulator adapted for mountin electrical conductors thereon and a trans ormer combined with said insulator to form a unitary structure, the insulator being interposed between members formed of magnetic material and arranged to form a part of the magnetic circuit of the transformer.

6. A device of the class specified comprising an insulator adapted for mounting electrical conductors thereon and a transformer having portions of its core located on opposite sides of the insulator and mechanically secured thereto.

7. A device of the class specified comprising an insulator adapted for mounting electrical conductors thereon and a transformer having portions of its core located on opposite sides of the insulator and mechanically secured thereto, one of said core portions be ing provided with the primary winding and the other portion being provided with the secondary winding.

8. A device of the class specified comprising a pair of insulators, supports for said insulators made of magnetic material, and cross pieces extended between said insulators and arranged-to form portions of the core of a transformer.

9. The combination of a pair of uprights made of ma etic material, insulators mounted on said uprights, cross pieces between said uprights, said cross ieces being also made of magnetic materia, and coils .circuit with the same, one of said cross pieces being mounted upon the upper ends of the insulators.

12. The combination of a pole, a pair of uprights made of magnetic material mounted on said pole, insulators on said upri hts and magnetic cores with coils exten ing linked with said ma between said uprights, and forming a magnetic circuit with the same, one of said cross pieces being mounted upon the upper ends of the insulators, and the other one being mounted directly upon the uprights.

13. A combined insulator and transformer comprising a primary winding, a secondary winding and an insulator adapted for mounting electrical conductors thereon, said insulator being interposed and secured in the magnetic circuit between said windings.

14. The combination of a magnetic circuit having gaps, electrical conductors interetic circuit and insulators inserted in said gaps for supporting the electrical conductors.

15. The combination of an insulator, a support for said insulator of magnetic material, a.secondary winding on said support, a cap of magnetic material over the head of said insulator, and a primary winding under said cap.

16. The combination of an insulator adapted for mounting electrical conductors thereon, a support of magnetic material for the insulator, a secondary circuit surrround ing the support, and an electrical conductor mounted on the insulator so as to form a primary circuit in close proximity to the secondary circuit, but separated and insulated v therefrom by said insulator.

17. A transformer having an insulator secured in position between parts of the transformer core, said insulator being adapted for mounting between conductors thereon.

18. A transformerhavin a pair of corresponding core portions and a pair of insulators interposed between the corresponding ends of the respective core portions, said insulators being adapted for mounting electrical conductors thereon.

19. A transformer comprising separated core sections, one carrying the primary and the other the secondary and insulators interposed between said core sections, said insulators being adapted for mounting elec trical conductors thereon.

20. A device of the class specified, a pair of insulators, a ma etic core section secured to and extending between said insulators and provided with a transformer winding, and a second magnetic core section also secured to and extending between said insulators, but on the side of same opposite said first mentioned section, said second mentioned section being provided with the complemental transformer winding.

21. A device of the class described comprising a solid insulator for electrical conductors and a transformer having portions of its core located on o posite sides of the insulator and mechanica 1y fastened thereto one of said core portions being provided with the primary winding and the other ortion being rovided with the secon ary winding, said solid insulator completely closin the gap between the core portions.

22. he combination of a magnetic circuit having ga s, electrical circuits interlinked with sai magnetic circuit and solid insulators for electrical conductors inserted in and completely closin said gaps.

In witness whereof, I ereunto subscribe my name this 18th day of March, A. D., 1918.

ROYAL E. FRICEY. 

